[syzbot] [wireless?] WARNING in ieee80211_tx_h_rate_ctrl

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 5cdb2c77c4c3 Merge tag 'net-6.15-rc8' of git://git.kernel...
git tree: net
console output: https://syzkaller.appspot.com/x/log.txt?x=14784df4580000
kernel config: https://syzkaller.appspot.com/x/.config?x=9fd1c9848687d742
dashboard link: https://syzkaller.appspot.com/bug?extid=0d516b33238bd97ee864
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/d90a868e19ee/disk-5cdb2c77.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/3c5ff2a5a972/vmlinux-5cdb2c77.xz
kernel image: https://storage.googleapis.com/syzbot-assets/f6a0db04ca42/bzImage-5cdb2c77.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+0d516b...@syzkaller.appspotmail.com

wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
------------[ cut here ]------------
wlan1: Dropped data frame as no usable bitrate found while scanning and associated. Target station: 08:02:11:00:00:00 on 5 GHz band
WARNING: CPU: 1 PID: 1111 at net/mac80211/tx.c:756 ieee80211_tx_h_rate_ctrl+0xc87/0x1780 net/mac80211/tx.c:749
Modules linked in:
CPU: 1 UID: 0 PID: 1111 Comm: kworker/u8:6 Not tainted 6.15.0-rc7-syzkaller-00082-g5cdb2c77c4c3 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:ieee80211_tx_h_rate_ctrl+0xc87/0x1780 net/mac80211/tx.c:749
Code: 31 f6 83 e6 07 41 0f 95 c6 31 ff e8 03 26 ea f6 43 8d 0c 76 83 c1 02 48 c7 c7 60 8b 8c 8c 48 89 de 4c 89 fa e8 3a 7e ae f6 90 <0f> 0b 90 90 41 bf 01 00 00 00 e9 eb 02 00 00 e8 95 21 ea f6 e9 6a
RSP: 0018:ffffc90003c9f460 EFLAGS: 00010246
RAX: caae12da654acc00 RBX: ffff888078a69738 RCX: ffff888026951e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc90003c9f5d0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bba984 R12: dffffc0000000000
R13: ffffc90003c9f788 R14: 0000000000000001 R15: ffff888059534d44
FS: 0000000000000000(0000) GS:ffff8881261c2000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557d9f3588 CR3: 0000000031484000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
invoke_tx_handlers_late+0xb6/0x1820 net/mac80211/tx.c:1850
ieee80211_tx+0x2ac/0x420 net/mac80211/tx.c:1971
__ieee80211_tx_skb_tid_band+0x50f/0x680 net/mac80211/tx.c:6107
ieee80211_tx_skb_tid_band net/mac80211/ieee80211_i.h:2338 [inline]
ieee80211_send_scan_probe_req net/mac80211/scan.c:655 [inline]
ieee80211_scan_state_send_probe+0x59a/0xa10 net/mac80211/scan.c:683
ieee80211_scan_work+0x5b1/0x1ce0 net/mac80211/scan.c:1143
cfg80211_wiphy_work+0x2dc/0x460 net/wireless/core.c:435
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>


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[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit: 6d2f142b1e4b net: hns3: fix double free issue for tx spare..
git tree: net
console output: https://syzkaller.appspot.com/x/log.txt?x=13ade7fa580000
kernel config: https://syzkaller.appspot.com/x/.config?x=e3161cabe5a361ff
dashboard link: https://syzkaller.appspot.com/bug?extid=0d516b33238bd97ee864
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=178a965a580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=141bb65a580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/efb336297393/disk-6d2f142b.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/c21fa89166f7/vmlinux-6d2f142b.xz
kernel image: https://storage.googleapis.com/syzbot-assets/9404edc5fcc0/bzImage-6d2f142b.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+0d516b...@syzkaller.appspotmail.com

------------[ cut here ]------------
wlan1: Dropped data frame as no usable bitrate found while scanning and associated. Target station: 08:02:11:00:00:00 on 5 GHz band

WARNING: net/mac80211/tx.c:758 at ieee80211_tx_h_rate_ctrl+0xd82/0x1760 net/mac80211/tx.c:751, CPU#1: kworker/u8:8/3000
Modules linked in:
CPU: 1 UID: 0 PID: 3000 Comm: kworker/u8:8 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:ieee80211_tx_h_rate_ctrl+0xded/0x1760 net/mac80211/tx.c:751
Code: 1c 08 00 00 48 8b 44 24 38 8b 30 45 31 ed 83 e6 07 41 0f 95 c5 31 ff e8 01 3c b2 f6 43 8d 4c 6d 02 48 89 df 4c 89 f6 4c 89 fa <67> 48 0f b9 3a 41 bd 01 00 00 00 e9 73 01 00 00 e8 9e 37 b2 f6 e9
RSP: 0018:ffffc9000b7173c0 EFLAGS: 00010293
RAX: ffffffff8b123f8f RBX: ffffffff900054b0 RCX: 0000000000000005
RDX: ffff88805e97c384 RSI: ffff8880783817c8 RDI: ffffffff900054b0
RBP: ffffc9000b717528 R08: ffff88807cad29c7 R09: 1ffff1100f95a538
R10: dffffc0000000000 R11: ffffed100f95a539 R12: dffffc0000000000
R13: 0000000000000001 R14: ffff8880783817c8 R15: ffff88805e97c384
FS: 0000000000000000(0000) GS:ffff8881257f5000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 00007fdf034708c0 CR3: 0000000079e3a000 CR4: 00000000003526f0
Call Trace:
<TASK>
invoke_tx_handlers_late+0xba/0x18a0 net/mac80211/tx.c:1849
ieee80211_tx+0x2d7/0x4b0 net/mac80211/tx.c:1971
__ieee80211_tx_skb_tid_band+0x50f/0x680 net/mac80211/tx.c:6288
ieee80211_tx_skb_tid_band net/mac80211/ieee80211_i.h:2405 [inline]
ieee80211_send_scan_probe_req net/mac80211/scan.c:685 [inline]
ieee80211_scan_state_send_probe+0x594/0xa00 net/mac80211/scan.c:713
ieee80211_scan_work+0x65f/0x1c50 net/mac80211/scan.c:1174
cfg80211_wiphy_work+0x2ab/0x450 net/wireless/core.c:438
process_one_work kernel/workqueue.c:3257 [inline]
process_scheduled_works+0xaec/0x17a0 kernel/workqueue.c:3340
worker_thread+0xda6/0x1360 kernel/workqueue.c:3421
kthread+0x726/0x8b0 kernel/kthread.c:463
ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
</TASK>
----------------
Code disassembly (best guess):
0: 1c 08 sbb $0x8,%al
2: 00 00 add %al,(%rax)
4: 48 8b 44 24 38 mov 0x38(%rsp),%rax
9: 8b 30 mov (%rax),%esi
b: 45 31 ed xor %r13d,%r13d
e: 83 e6 07 and $0x7,%esi
11: 41 0f 95 c5 setne %r13b
15: 31 ff xor %edi,%edi
17: e8 01 3c b2 f6 call 0xf6b23c1d
1c: 43 8d 4c 6d 02 lea 0x2(%r13,%r13,2),%ecx
21: 48 89 df mov %rbx,%rdi
24: 4c 89 f6 mov %r14,%rsi
27: 4c 89 fa mov %r15,%rdx
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: 41 bd 01 00 00 00 mov $0x1,%r13d
35: e9 73 01 00 00 jmp 0x1ad
3a: e8 9e 37 b2 f6 call 0xf6b237dd
3f: e9 .byte 0xe9


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